/* ============================================================
   Nexus landing — theme mirrors the desktop app:
   Orbitron (display) + JetBrains Mono (body),
   cyan-400 glow on slate-950, amber accents.
   ============================================================ */
:root {
  --bg: #020617;          /* slate-950 */
  --bg-soft: #0b1120;
  --panel: #0f172a;       /* slate-900 */
  --panel-2: #111c33;
  --border: rgba(34, 211, 238, 0.16);
  --border-soft: rgba(148, 163, 184, 0.14);
  --text: #e2e8f0;        /* slate-200 */
  --muted: #94a3b8;       /* slate-400 */
  --cyan: #22d3ee;        /* cyan-400 — primary accent */
  --cyan-deep: #06b6d4;
  --amber: #fbbf24;       /* amber-400 */
  --radius: 14px;
  --shadow: 0 30px 70px -20px rgba(0, 0, 0, 0.8);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

/* ---- App-matched utility classes ---- */
.glow-cyan { text-shadow: 0 0 20px rgba(34, 211, 238, 0.5); }
.glow-box {
  box-shadow:
    var(--shadow),
    0 0 40px rgba(34, 211, 238, 0.12),
    inset 0 0 30px rgba(34, 211, 238, 0.04);
}
.grid-bg {
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.035) 1px, transparent 1px);
  background-size: 22px 22px;
}
.corner-accent { position: relative; }
.corner-accent::before,
.corner-accent::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  pointer-events: none;
}
.corner-accent::before {
  top: -1px; left: -1px;
  border-top: 2px solid rgba(34, 211, 238, 0.55);
  border-left: 2px solid rgba(34, 211, 238, 0.55);
}
.corner-accent::after {
  bottom: -1px; right: -1px;
  border-bottom: 2px solid rgba(34, 211, 238, 0.55);
  border-right: 2px solid rgba(34, 211, 238, 0.55);
}

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(55% 45% at 50% -5%, rgba(34, 211, 238, 0.18), transparent 70%),
    radial-gradient(45% 40% at 88% 8%, rgba(251, 191, 36, 0.08), transparent 70%);
  pointer-events: none;
}

/* ---------- Nav ---------- */
.nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-logo { width: 30px; height: 30px; filter: drop-shadow(0 0 10px rgba(255, 60, 60, 0.4)); }
.brand-name {
  font-family: "Orbitron", sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
}
.nav-links { display: flex; gap: 28px; font-size: 0.9rem; letter-spacing: 0.05em; color: var(--muted); }
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--cyan); }

/* ---------- Hero ---------- */
.hero {
  max-width: 860px;
  margin: 56px auto 0;
  padding: 0 24px;
  text-align: center;
}
.version-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(34, 211, 238, 0.05);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 30px;
}
.version-pill strong {
  font-family: "Orbitron", sans-serif;
  color: var(--cyan);
  letter-spacing: 0.08em;
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.18), 0 0 12px #34d399;
}
.headline {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(2rem, 5.5vw, 3.6rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.grad {
  background: linear-gradient(100deg, var(--cyan), #67e8f9 60%, var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.subhead {
  margin: 24px auto 0;
  max-width: 600px;
  font-size: 1.02rem;
  color: var(--muted);
}

/* ---------- CTA ---------- */
.cta-row {
  margin-top: 38px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 13px 26px;
  border-radius: 9px;
  font-family: "Orbitron", sans-serif;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  transition: transform 0.15s ease, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(100deg, var(--cyan), var(--cyan-deep));
  color: #021016;
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.35);
}
.btn-primary:hover { box-shadow: 0 0 44px rgba(34, 211, 238, 0.6); transform: translateY(-2px); }
.btn-ghost {
  background: rgba(34, 211, 238, 0.05);
  border: 1px solid var(--border);
  color: var(--cyan);
}
.btn-ghost:hover { background: rgba(34, 211, 238, 0.12); border-color: var(--cyan); }
.btn-top { display: block; line-height: 1.1; }
.btn-sub {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  opacity: 0.85;
  font-weight: 400;
  letter-spacing: 0;
}
.os-icon svg { display: block; }

/* ---------- Screenshot ---------- */
.shot-wrap {
  max-width: 1040px;
  margin: 66px auto 0;
  padding: 0 24px;
}
.window {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  background: rgba(2, 6, 23, 0.6);
  border-bottom: 1px solid var(--border-soft);
}
.tl { width: 12px; height: 12px; border-radius: 50%; }
.tl.red { background: #ff5f57; }
.tl.yellow { background: #febc2e; }
.tl.green { background: #28c840; }
.window-title {
  margin: 0 auto;
  font-size: 0.8rem;
  color: var(--muted);
  transform: translateX(-18px);
}
.shot { display: block; width: 100%; height: auto; }

/* ---------- Downloads ---------- */
.downloads {
  max-width: 1040px;
  margin: 110px auto 0;
  padding: 0 24px;
  text-align: center;
}
.section-title {
  font-family: "Orbitron", sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--cyan);
}
.section-sub { color: var(--muted); margin-top: 12px; font-size: 0.95rem; }
.cards {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 36px 26px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: var(--border);
  box-shadow: 0 0 36px rgba(34, 211, 238, 0.12);
}
.card.detected {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan), 0 0 44px rgba(34, 211, 238, 0.3);
}
.card-icon { color: var(--cyan); display: flex; justify-content: center; margin-bottom: 16px; }
.card h3 { font-family: "Orbitron", sans-serif; font-size: 1.15rem; letter-spacing: 0.04em; }
.card-meta { color: var(--muted); font-size: 0.82rem; margin: 8px 0 22px; }
.dl-btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 8px;
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid var(--border);
  font-size: 0.86rem;
  letter-spacing: 0.03em;
  color: var(--cyan);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.dl-btn:hover { background: var(--cyan); color: #021016; box-shadow: 0 0 24px rgba(34, 211, 238, 0.5); }
.all-releases { margin-top: 38px; color: var(--muted); font-size: 0.9rem; }
.all-releases a { color: var(--cyan); }
.all-releases a:hover { text-decoration: underline; }

/* ---------- Features ---------- */
.features {
  max-width: 1040px;
  margin: 110px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.feature {
  padding: 28px 24px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: rgba(15, 23, 42, 0.5);
  transition: border-color 0.2s;
}
.feature:hover { border-color: var(--border); }
.f-icon { font-size: 1.7rem; color: var(--cyan); margin-bottom: 14px; line-height: 1; }
.feature h3 { font-family: "Orbitron", sans-serif; font-size: 1rem; letter-spacing: 0.03em; margin-bottom: 10px; }
.feature p { color: var(--muted); font-size: 0.9rem; }

/* ---------- Footer ---------- */
.footer {
  max-width: 1040px;
  margin: 100px auto 0;
  padding: 26px 24px 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  border-top: 1px solid var(--border-soft);
}
.footer-status .online { color: #34d399; }
.footer a:hover { color: var(--cyan); }
.footer-dot { opacity: 0.4; }
#footerVersion { font-family: "Orbitron", sans-serif; color: var(--cyan); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .features { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .cards, .features { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .hero { margin-top: 28px; }
}